Skiving-machine



N. v. DYERR SKIVING MACHINE.

APPLICATHJN FILED 050.13. 19m.

Patented June 8, 1920.

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, NEWELL v. mum, or HOLBROOK, MASSACHUSETTS, AssIGn'on 'ro omrnnsnon MACHINERY CORPORATION, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW JERSEY.

SKIVING-MACHINE.

Specification of Letters Patent.

Application filed December 13, 1918. Serial No. 266,582.

To all whom it mayconcern:

Be it known that I, NEWELL V. D YER, a citizen of the United States, resldlng at Holbrook, in the county of Norfolk and State 'of Massachusetts, have invented certain Improvements in Skiving-Machmes, of which the following descript1on,in connection with the accompanying drawings, 1s a specification, like reference characters on the drawings indicating l1ke parts in the several figures.

This invention relates to skiv ng machines and is herein illustrated as embodied in a machine for cutting off the end of a vamp on an incline so that the finished end of th vamp will be beveled.

In the" manufacture, of boots and shoes in which square-ended or cut-ofl: Vamps w1th tips stitched to them are used, 1t is customary in many factories to cut the vamps from patterns which are correct for the shortesttips to be used, the tlps belng of various lengths. The square end of the vamp is skived in any event so as to prevent the formation of an objectionable bunch or rib along the locality ofits attachment to the tip; and in the case of a long tip where the extentgof the overlap would be objectionable 1t 1s customary to shorten the vamp by cutting a strip from the endithereof and then to skive the end.

The general object of the present nvention isto provide a machine by the use of which the cutting off and sk1v1ng operation may be performed-upon a vamp or other article of similar flexible material. To this end one feature of the invention relates to work supporting and feed ng means comprising a rotary supporting and feeding roll and a stationary supporting member uponwhich the work 1s held by a presser foot while being advanced to the lmife. By cutting away the stationary member in the rear of the presser foot to provide a proper space, the knife maybe inclined sufficiently to sever the work on an angle and at the same time may have its edge located close to'the .locallty at which the workis engaged: by the presser foot so that no bulging. or wrinkling of the work occursbetween the foot and the knlfe.

This and other features of the invention 7 including certain details of construction and combinations of; parts will be described as embodied in an illustrative machine and pointed out in the appended claims.

Referring drawings,.

Figure 1 is an elevation of a portion of The machine chosen for illustration is of the present invention is Patented June 8, 1920.

Amazeen type and is or may be now to the accompanying.

point in the ex- 7 identical in many respects with the machine shown and described in the patent to Bayley N 0. 823,578. The'machine comprises a feed'roll 3 having a cylindrical portion 5 of reduced diameter with which the margin of a feed disk 7 cooperates toaid in feeding the work. A presser foot 9 holds the work down upon the knurled surface of the feed roll as well as upon that of a stationary member, presently to be described, and a rotary disk knife 11 is located behind the foot, its cutting edge being inclined'to the axis of rotation of the feed roll.: The shafts 12, 14: and'1,6 of the roll, knifeand feed disk respectively may be rotated by any suitable mechanism" such, for example," asthat shown in the patent, and in general the parts which have thus far been described with the exception of the presser foot may be'like the corresponding parts of the patented machine and similarly *mounted for adjustment.

The patented machine is adapte'd'to skive the margin of a' piece'o'f flexible'material suchas a vamp. It is not practioable,'however, to sever a piece of materialupon the:

machine for the reason that the-operative portion of the edgeof the'knife should run close to the locality at which the work is helddown upon thef'roll by the presser foot, since otherwise the work is liable to wrinkle and thereby be cut irregularly.' :It

is'therefore necessary to keep the effective edge of the knife so close to ,the locality at which the work is gripped between the roll and presser foot thatbefore the knife can will contact'with the roll. 7

In order to obviate this difiiculty a stae be tilted sufliciently tosever the work itv tionary supporting member 13 is provided to support that part of the work which is to becut off. This member is fastened to the face of theroll.

' knife, I as indicated by the dotted line 19 so that bearing of the roll by a screw and has an operative surface which is curved and forms a continuation of the work supporting sur- This memberextends beneaththe presser foot 9, and its rear end is cut away as indicated at 17 on a'curve which is concentric with that of the edge of the the curved end being also undercut,

the edge of the knife may run just underneath the overhanging end of the supporting member. With sucha construction the knife member; 13 without contacting either with at thesametime the forward point onthe cutting edge of the knife may he, as it' *should, close to the locality at which the may be tilted as shown abouta horizontal line extending approximately through the uppermost of the roll 3 with that of the stationary the'roll or with the stationary member; and

adjustable on the bracket 21 in a direction transverse to the axis of the feed roll, the two plateshaving formed respectively 1n them slots (not shown)'which are at right angles to each other and through which passes the stem of a screw=35 by which the plates are held in adjusted position. At its right-hand end the bar 2? is fastened by a screw 37'to-aisliding block 89. An adjusting-screw 41, which is threaded through theblock 39, hasga reducedportion extending through-a bore in the lu'g29, a nut 13 being threadedon the projecting end of saidreduced portion. Thescrew is thus held from longitudinal movement so that' 'whe'n it is turned by manipulating the knurled head 7 the edge gage23 is adjusted to the left or the: right to decrease or increase the width of the strip which will be cut off from the end of thevamp.

' In the operationof machine the knife is adjusted to the proper angle, such for exampleas the'one shown, with the plane ofr itsv cutting edge-intersecting approximately the vertical plane at the junction of the'roll' 3andj the member 13 at a point in the path of the, work. The. edge gage is thenadjusted by "turning the; screw 45 to regulate the width of the strip which is to be cut off, The

square end of a vamp is then placed against the: gage and pushed sidewise beneath the presser foot 9and the feed disk 7, whereupon it is fed to the knife, the main portion point of junction of the surface of the vamp passing under the knife and the piece or strip which is cut off passing over the knife. 7

Although the'invention has beenset forth as embodied in a particular machine, it should be understood th-at-the invention 'is not limited in the scope of its application to the particular machine which has been shown and described.

Having-thus described my invention, what I claim as new and desire to secure by Letters Patent isj; ,4 i A mac u ting n. an angle a strip. frolna piece of flexible material, having; in combination, a rotary feed, roll for ngegingt e yhe neteri he t tiony memb ersuppo t ng;- he p r ion which is o e o t f; sa ine nher having an per tiv e ur d tel corr spond o the urvat re fthee d ro an a: knife" in in d o' he ie -the relh 2. A machine for cutting on anangle a strip r m apiece ft-flexible material, having in em ine iem a' etary feed-r011 oring incombination, a work support comprise I ing arotary roll anda; stationary member the operativeface of; which is .curvedzto correspond to the curvature of the roll, and forms anextensionof the adjacent surface of the roll, meansrfor rotating theroll to feedthe work, meansffor pressing the-work down upon" the work support, and means for severing, the work on .anangle; V

1 4; A machine, for cutting on an angle a strip from" a piece of flexible material,- haw, ing in combination, work: supporting and work' feeding means comprising a rotary supportingand: feeding roll and a stationarysupporting member, andmeans for severing the work on an angle along a line which passes. approximately through a point ofv junction of .the surface of the roll with thatof the stationary support.

5. A machine for cutting on an angle a strip from I a piece of: flexible. material, havf knife inclinedto the axis of rotation of the roll andhaving a portion extending below strip from a piece of flexible material, havthe uppermost portion .of the: stationary member. 7

6; A 'machine for cutting on. an angle a a ing in combination, a cutter, work supporting and work feeding means comprising a rotary supporting and feeding roll and a stationary supporting member, and means for pressing the Work against said roll and member.

7. A machine of the class described, having in combination, a Work supporting and feeding roll, means for rotating the roll, a stationary Work support located at one end of the roll and having a curved surface which forms an extension of the adjacent surface of the roll, a presser foot adapted to hold the Work against the roll and support, said support being cut away adjacent the foot to provide space for a knife, and a knife located to sever the Work on an angle.

8. A machine of the class described, having'in combination, a work supporting and feeding roll, means for rotating the roll, a stationary Work support located at one end of the roll and having a curved surface which formsan extension of the adjacent surface of the roll, a presser foot adapted to toe end of a vamp, having in combination, a

rotary feed roll, a stat1onary support ad jacent to one end of the roll and having a supporting surface curved to correspond to the curvature of the roll, and a rotary disk knife located to cooperate with said roll and support to sever the vamp on a bevel. 1

In testimony whereof I have signed my name to thi specification.

. NEWELLv. DYER. 

